Tooling, Fixtures, Dies & Mold Economics worked example

Mold Changeover Cost at 58% avoidable share: a worked example in tooling, fixtures, dies & mold economics

Suppose avoidable share falls to 58%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate the cost of swapping molds on injection or compression presses including labor and lost production time.

The inputs for this scenario

  • Changeovers Per Period: 30 changeovers (held at the documented default)
  • Cost Per Changeover: 320 $/changeover (held at the documented default)
  • Avoidable Share: 58 % (the input this scenario stresses; the baseline uses 80)
  • Crane & Rigging Flat: 450 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total changeover cost = changeovers x cost per changeover x avoidable share% + rigging flat.
  • Total mold changeover cost works out to 6,018 $ at these inputs, and this is the headline figure for the scenario.
  • Mold changeover cost per unit works out to 201 $ / piece at these inputs.
  • Variable mold changeover cost works out to 5,568 $ at these inputs.
  • Fixed mold changeover cost adder works out to 450 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where avoidable share sits at 80% and the headline result is 8,130 $, this scenario comes in 25.98% below the baseline at 6,018 $.
  • It multiplies changeovers by cost each and an avoidable-share factor to get variable cost, adds a fixed crane and rigging flat, and reports total and per-changeover cost. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total mold changeover cost: 6,018 $ (headline result)
  • Mold changeover cost per unit: 201 $ / piece
  • Variable mold changeover cost: 5,568 $
  • Fixed mold changeover cost adder: 450 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Mold Changeover Cost calculator, set avoidable share to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.